Potentiometric Study of the Nucleation of Cu2o after Its Formation from Fehling Solutions and Reducing Sugars (Journal article)

Nanos, C. G./ Konidari, C. N./ Karayannis, M. I.


The oxidation of glucose by Fehling solution was followed by various solid-state ion-selective electrodes. The shape of the recorded potential vs. time transient curves at three different electrodes (Cu2+, Pb2+, and Ag+/S2-) was explained on the basis of the known mechanisms of formation of precipitates, the growth of crystals, and adsorption/desorption phenomena. The curves are peculiar in shape, are very reproducible, and show three distinct parts. The potential changes of the electrodes are due to the consumption of OH- during the reaction, as well as to its adsorption and desorption on the Cu2O precipitate. The effects on the values of different curve parameters of the concentrations of glucose, OH-, and K,Na-tartrate, as well as the temperature, were studied.
Institution and School/Department of submitter: Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείας
URI: http://olympias.lib.uoi.gr/jspui/handle/123456789/8911
ISSN: 1040-0397
Link: <Go to ISI>://A1991FZ24000018
http://onlinelibrary.wiley.com/store/10.1002/elan.1140030620/asset/1140030620_ftp.pdf?v=1&t=h0dw01kj&s=989ee1ac0f8513bddc0fc01e1aac9cfa19a1063f
Publisher: Wiley-VCH Verlag
Appears in Collections:Άρθρα σε επιστημονικά περιοδικά ( Ανοικτά)

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